title: Perfluorooctanesulfonate and related fluorochemicals in the Amur tiger (Panthera tigris altaica) from China.
abstract: Perfluorinated compounds (PFCs) are used in a variety of industrial applications. We tested the hypothesis that, in Amur tigers (Panthera tigris altaica), captivity in industrialized areas increases PFC levels, potentially presenting a health risk to these animals. Serum samples were collected from 100 tigers from industrialized or nonindustrialized regions in China with nonpoint sources of PFCs. Mean concentrations of PFCs in these samples ranged from 1.57 +/- 0.83 ng/mL in nonindustrial Hailin to 4.31 +/- 2.90 ng/mL in industrial Beijing. PFC concentrations were significantly higher in tigers from the industrial city of Harbin than those from Hailin (p < 0.05). Perfluorooctanesulfonate (PFOS) was the most abundant PFC in all tigers and increased with age, regardless of industrial/ nonindustrial background (p < 0.01). However, PFOS concentrations were 2-4 orders of magnitude less than the current no-observed-effect level. In addition, overall PFC levels in Amur tigers were low compared with various species living in other countries, consistent with the relatively short history of PFC use in China. These results are consistent with the hypothesis that captivity in industrialized areas increases PFC levels in Amurtigers. They also suggestthat PFC accumulation will persist, and even increase, with continued use of PFCs in China.
authors.affiliation: Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, People's Republic of China.
authors.forename: Xuemei
authors.initials: X
authors.lastname: Li
authors.forename: Leo W Y
authors.initials: LW
authors.lastname: Yeung
authors.forename: Sachi
authors.initials: S
authors.lastname: Taniyasu
authors.forename: Ming
authors.initials: M
authors.lastname: Li
authors.forename: Hongxia
authors.initials: H
authors.lastname: Zhang
authors.forename: Dan
authors.initials: D
authors.lastname: Liu
authors.forename: Paul K S
authors.initials: PK
authors.lastname: Lam
authors.forename: Nobuyoshi
authors.initials: N
authors.lastname: Yamashita
authors.forename: Jiayin
authors.initials: J
authors.lastname: Dai
mesh_terms: D000375:Aging / Q000097:blood; D017738:Alkanesulfonic Acids / Q000097:blood*; D000818:Animals; D000835:Animals, Wild / Q000097:blood; D000836:Animals, Zoo / Q000097:blood; D002681:China; D004784:Environmental Monitoring; D005466:Fluorocarbons / Q000097:blood*; D005843:Geography; D012044:Regression Analysis; D018570:Risk Assessment; D012727:Sex Characteristics; D046010:Tigers / Q000097:blood*
chemical_list: D017738:Alkanesulfonic Acids; D005466:Fluorocarbons; C076994:perfluorooctane sulfonic acid